#047BEF
Closest named color: Clear Blue (#247AFD). oklch(59.3% 0.196 255.4), rgb(4, 123, 239).
Aa
Black text reads best on this color (5.08:1).
About this color
#047BEF is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.196 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.024 away. Black text reads best on it, at 5.08:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.196) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.08:1 |
| White text | 4.13:1 |
Values
| HEX | #047BEF |
| RGB | rgb(4, 123, 239) |
| HSL | hsl(210, 97%, 48%) |
| OKLCH | oklch(59.3% 0.196 255.4) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #047BEF | 4.13:1 | AA large text | Lc -73.1 | Content text, not long reading |
| Black text on #047BEF | 5.08:1 | AA | Lc 36.5 | Non-text elements, placeholder text |
| #047BEF text on white | 4.13:1 | AA large text | Lc 67.6 | Content text, not long reading |
| #047BEF text on black | 5.08:1 | AA | Lc -34.1 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C4DBFA
oklch(88.4% 0.05 255.9)
-
Step 300
300
#9AC4F9
oklch(80.9% 0.088 254.5)
-
Step 400
400
#61A2F7
oklch(70.6% 0.142 255.8)
-
Step 500
500
#2E88F3
oklch(63% 0.181 255.5)
-
Step 600
600 (this color)
#047BEF
oklch(59.3% 0.196 255.4)
-
Step 700
700
#005EBA
oklch(49.1% 0.163 255.3)
-
Step 800
800
#004D9A
oklch(42.7% 0.142 255.2)
-
Step 900
900
#08407E
oklch(37.6% 0.118 255.5)
-
Step 950
950
#09264A
oklch(27% 0.075 255.8)
#047BEF with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #3287F3 | 0.039 |
| Deuteranopia (no green cones) | #0074ED | 0.018 |
| Tritanopia (no blue cones) | #0097A9 | 0.146 |
| Achromatopsia (no color) | #7D7D7D | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #047BEF
#047BEF
oklch(59.3% 0.196 255.4)
- #A97200
#A97200
oklch(59.5% 0.125 75.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #047BEF, closest first.
No curated palette has a color within ΔE 0.04 of #047BEF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.024
- Cerulean Blue #056EEE ΔE 0.033
- Royal Blue #4169E1 ΔE 0.051
- Bright Blue #0165FC ΔE 0.058
- Dodger Blue #1E90FF ΔE 0.059
- Neon Blue #4361EE ΔE 0.064
- Water Blue #0E87CC ΔE 0.067
- Dark Sky Blue #448EE4 ΔE 0.067
Use #047BEF in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.